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The result of cluster analysis is similar for main wood nature properties and phenotypic properties in 20 natural populations of Picea asperata.

依据管胞和木材基本密度性状的变异特征，可进行优良纸浆材群体的初步选择和群体聚类分析。

In order to achieve the properties required, we mainly studied the effects of factors on the properties of ambient-curing polyurethane elastomer. 1. Polyhydric alcohol.

为了明确各种因素对试样性能的影响，本文主要研究了聚醚多元醇、催化剂、填料诸因素对室温固化聚氨酯弹性体性能的影响。

Because of the complex nonlinear relationship among psychrometric properties ,using conventional approaches to measure psychrometric properties is very difficult for hardware implementation,and can not satisfy the need of air-conditioning real-time control also.

为了解决这一问题，本文根据空调设计过程的特点，利用人工神经网络方法，建立了两个湿空气状态参数的神经网络预测模型，实现了湿空气状态参数的智能化预测。

The special tribo-electdc tester with high sliding speed and electric current was developed,which mail working parameters are, current density up to 2.5 A/mm~2, the sliding speed 100 m/s,the load over 500 N (3.2 MPa) and the pulsant strike pressure within 20 N. This testersuccessfully simulates the tribological and electric properties of strip materials. 2, By using the above tester, study on tdbological properties and carrying currentperformances of copper-base powder metallurgy material and metal impregnation carbonmaterial are carded out.

本论文开展的主要研究内容和所取得的成果如下： 1、首次开发了大电流、高速度和重载荷的载流摩擦磨损专用试验机，能够稳定提供恒定交流电流密度2.5 A／mm~2，相对滑动速度100 m／s(12000 r／min)，载荷可达500 N(3.2MPa)，脉动冲击载荷可达20 N，为研究提速接触网和滑板的高速载流摩擦学特性及其机理，以及开发新型高耐磨性、高载流性能滑板材料提供了先进可靠的试验手段(该机已获得一项实用新型专利，ZL 2006 2 0096036.5)。

So it has become all-important to design and synthesize novel pyrazolone derivatives with excellent photochromic properties in the solid state and study the photochromic properties and photochromic mechanism.

因此设计并合成能够在固态发生光致变色的化合物，对其光化学性质、结构与性能之间关系的研究以及光致变色机理的探讨有着十分重要的意义。

This thesis includes two parts. One part studied the two photon excited luminescent properties of thirty pyridinium compounds in solution, another part studied the two photon excited luminescence properties of HMASPS and HEASPS in polymer matrix.

论文分为两个部分：第一部分研究的是吡啶盐溶液的双光子上转换性质，第二部分研究的是吡啶盐HMASPS和HEASPS在聚合体系中的双光子上转换性质。

The electrocatalytic reoxidation properties of guanine, adenine, and theirmixture by the Iron hexacyanoferrate films were determined and show differentelectrocatalytic properties in K+ and Na+ aqueous solutions.

铁赤血盐薄膜在K+和Na+的电解液中对於鸟嘌呤、腺嘌呤和该混合状态下显示有不同的电催化氧化性质。

Product Materials 3N reflective high demand, high starting point, product quality has been the lifeline for enterprises to produce products to meet customer requirements as our own duty, their products Retroreflective performance, chroma, glass properties, resistant to salt spray and other indicators are reached or exceed national standards, its appearance and physical properties of parts of the country has already exceeded the standard,°Products have been widely used in highway, railway, airport, harbor, mining, fire fighting, environmental protection, advertising, vehicle license and other fields, the production of various kinds of reflective signs, signs and various billboards, as well as the substantial application of civilian products, more than 40% of the products go out of the country, sold to the world's 48 countries and regions.

3N反光材料产品高要求，高起点，一直以产品质量为企业的生命线，以生产满足客户要求的产品为己任，其产品的逆反射性能、色度、玻璃性能、耐盐雾等指标均达到或超过国家标准，其外观和部分物理性能已超过的国家标准，艾普莱斯产品已被广泛应用于公路、铁路、机场、港航、矿山、消防、环保、广告、车辆牌照等领域，制作各种反光标志、标牌及各种广告牌，以及被大量运用于民用制品，40％以上的产品走出国门，销往世界四十八个国家和地区。

The magnetic properties of carbonyl iron particle s were characterized by VSM;the apparent viscosities and the magnetic field-induced shear stresses of the magnetorheological fluids above were investigated by an advanced rheometric expansion system;the properties of MR damper were tested by an electro-hydralic servocontrol testing system.

研究了一种新型MR液和MR阻尼器；用振动样品磁强计测试了MPS-MRF-25羰基铁粉的磁性能；用磁流变仪测试了MR液的表观粘度和磁致剪切应力；用静置沉降法分析了MR液的抗沉降稳定性；用电液伺服材料性能试验机测试了MR阻尼器的性能。

The low temperature properties of the binders were greatly improved, the dynamic mechanical properties of SBR-modified asphalts before and after oxidation or sulfurization were characterized at -30~100℃ by using dynamic shear rheometry. The results show that the addition of SBR1500 increased the binder elasticity at low temperature.

结果表明，加入粉末SBR1500后改性沥青材料薄膜前后的延度和流变性能都有明显的改进，而硫化共混改性可显著提高低温下改性沥青的粘弹性能。

I'm going tor her!

我这就去救她！

As rise are design to help keep a several toney , a brain chemical at continues lever.

SSRI被设计来帮助保持血液中的复合胺即在大脑中一个连续水平的化学物质。